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Top-bottom reblowing vacuum inductive stove

A technology of vacuum induction furnace and top-bottom combined blowing, which is applied in the field of metallurgical equipment and can solve problems such as the inability to meet the requirements of smelting high-purity steel.

Inactive Publication Date: 2005-12-21
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the above shortcomings of the traditional vacuum induction furnace, it cannot meet the needs of smelting high-purity steel

Method used

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  • Top-bottom reblowing vacuum inductive stove
  • Top-bottom reblowing vacuum inductive stove
  • Top-bottom reblowing vacuum inductive stove

Examples

Experimental program
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Embodiment Construction

[0013] Such as figure 1 , figure 2 , image 3 As shown, the top-bottom combined blowing vacuum induction furnace includes an electrode shaft 1, an induction coil 2, an observation window 3, a stamping rod 4, a top blowing oxygen lance 5, a bottom blowing vent plug 6, an alloy hopper 7, a crucible cap 8, Furnace lid lifting mechanism 9, vacuum unit 10, crucible 11, diversion groove 12, temperature measuring mechanism 13, ingot mold chamber 14, breakout groove 15, intermediate frequency power supply 16. A large vacuum chamber and a small vacuum chamber are sequentially arranged from bottom to top, and the large vacuum chamber communicates with the air inlet of the vacuum unit 10; a crucible 11 is arranged in the large vacuum chamber, a crucible cap 8 is arranged on the crucible, and a diversion groove 12 is arranged on the outside of the crucible. It is used to derive the smelted molten steel; an induction coil 2 is set on the outer wall of the crucible, and the induction coi...

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PUM

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Abstract

A vacuum induction furnace with top blow and bottom blow features setting top oxygen-blowing gun at top centre of small vacuum chamber with one end being connected to small vacuum chamber and another end being connected to gas supply pipe, enabling said gun to be moved vertically for inserting it to liquid steed surface in big vacuum chamber; connecting bottom blow vent-plug top port to crucible and bottom port to gas supply pipe. It has functions of decarbonization and denitrification , as well can be used to smelt low carbon steel and low nitrogen steel or to simulate VOD furnace for developing new technology .

Description

technical field [0001] The invention relates to the technical field of metallurgical equipment, in particular to a vacuum induction furnace for iron and steel smelting. Background technique [0002] Vacuum induction furnaces commonly used at present do not have top blowing system and bottom blowing gas supply system, and it cannot blow oxygen and inert gas into molten steel. Therefore, the steel grades made by traditional vacuum induction furnaces only depend on raw materials and raw material conditions. The quality of the furnace directly affects the quality of the product, and it is difficult to adjust it in the furnace. The smelted steel generally contains high carbon, nitrogen and non-metallic inclusions, especially the smelting of ultra-low carbon steel and ultra-low nitrogen steel is very difficult or even impossible. Due to the above shortcomings of the traditional vacuum induction furnace, it cannot meet the needs of smelting high-purity steel. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B3/22
Inventor 姜周华沙骏余强孙国会张天彪
Owner NORTHEASTERN UNIV